a,b = 0,1
while b < 10 :
     print(b)
     a,b = b,a+b

number = 7
guess = -1
print("数字猜谜游戏!")
while guess != number:
    guess = int(input("请输入你猜的数字："))

    if guess == number:
        print("恭喜，你猜对了！")
    elif guess < number:
        print("猜的数字小了...")
    elif guess > number:
        print("猜的数字大了...")

list = [1,2,3,4]
it = iter(list)
print(next(it))

for x in list :
    print(x)

